//网页顶部进度条加载
var num = 0
var over = false
var t = setInterval(function () {

  var nprogress = document.querySelector('.nprogress')
  num++
  if (num >= 95 && !over) return
  if (nprogress) {
    nprogress.style.width = num + '%'
  } else {
    var nprogress = document.createElement('div')
    nprogress.className = 'nprogress'
    nprogress.style.position = 'fixed'
    nprogress.style.top = 0
    nprogress.style.width = num + '%'
    nprogress.style.height = '5px'
    nprogress.style.backgroundColor = '#29d'
    document.body.appendChild(nprogress)
    //在进度条后面增加一个圈圈
    var nprogressRadius = document.createElement('div')
    nprogressRadius.className = 'nprogressRadius'
    document.body.appendChild(nprogressRadius)
  }
  if (num >= 110) {
    document.body.removeChild(nprogress)
    clearInterval(t)
    document.body.removeChild(document.querySelector('.nprogressRadius'))
  }
}, 10)
window.onload = function () {
  over = true
}
